A research for improvement of crystallinity and critical temperature by oxygen pressure in ErBa2Cu3O7-δ films

K. Yuki; M. Mukaida; H. Kai; R. Teranishi; K. Yamada; N. Mori; S. Horii; A. Ichinose; Y. Yoshida; K. Matsumoto

doi:10.1016/j.physc.2009.05.081

A research for improvement of crystallinity and critical temperature by oxygen pressure in ErBa₂Cu₃O_7-δ films

K. Yuki, M. Mukaida, H. Kai, R. Teranishi, K. Yamada, N. Mori, S. Horii, A. Ichinose, Y. Yoshida, K. Matsumoto

Research output: Contribution to journal › Article › peer-review

Abstract

We grew pure ErBa₂Cu₃O_7-δ (ErBCO) films and ErBCO films with BaSnO₃ (BSO) doping as artificial pinning centers (APCs) by pulse laser deposition on SrTiO₃ substrates, and the effects of oxygen pressure on crystallinity, critical temperature (T_C) and microstructure of ErBCO films were investigated. In a previous study, we grew ErBCO films with BaNb₂O₆ (BNO) by controlling the growth temperature under a constant oxygen pressure of 400mTorr and confirmed the effect of BNO as APCs. We observed the tendency which diameter of nanorods became small and pinning force was strong at lower growth temperature. However, crystallinity and T_C of ErBCO films degraded at low growth temperature. So, it is very important to improve crystallinity and T_C by a novel method. In this study, we focused on oxygen pressure, and aimed at improvement of crystallinity and T_C by controlling oxygen pressure.

Original language	English
Pages (from-to)	1384-1387
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	469
Issue number	15-20
DOIs	https://doi.org/10.1016/j.physc.2009.05.081
Publication status	Published - Oct 15 2009

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/j.physc.2009.05.081

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title = "A research for improvement of crystallinity and critical temperature by oxygen pressure in ErBa2Cu3O7-δ films",

abstract = "We grew pure ErBa2Cu3O7-δ (ErBCO) films and ErBCO films with BaSnO3 (BSO) doping as artificial pinning centers (APCs) by pulse laser deposition on SrTiO3 substrates, and the effects of oxygen pressure on crystallinity, critical temperature (TC) and microstructure of ErBCO films were investigated. In a previous study, we grew ErBCO films with BaNb2O6 (BNO) by controlling the growth temperature under a constant oxygen pressure of 400mTorr and confirmed the effect of BNO as APCs. We observed the tendency which diameter of nanorods became small and pinning force was strong at lower growth temperature. However, crystallinity and TC of ErBCO films degraded at low growth temperature. So, it is very important to improve crystallinity and TC by a novel method. In this study, we focused on oxygen pressure, and aimed at improvement of crystallinity and TC by controlling oxygen pressure.",

author = "K. Yuki and M. Mukaida and H. Kai and R. Teranishi and K. Yamada and N. Mori and S. Horii and A. Ichinose and Y. Yoshida and K. Matsumoto",

year = "2009",

month = oct,

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doi = "10.1016/j.physc.2009.05.081",

language = "English",

volume = "469",

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T1 - A research for improvement of crystallinity and critical temperature by oxygen pressure in ErBa2Cu3O7-δ films

AU - Yuki, K.

AU - Mukaida, M.

AU - Kai, H.

AU - Teranishi, R.

AU - Yamada, K.

AU - Mori, N.

AU - Horii, S.

AU - Ichinose, A.

AU - Yoshida, Y.

AU - Matsumoto, K.

PY - 2009/10/15

Y1 - 2009/10/15

N2 - We grew pure ErBa2Cu3O7-δ (ErBCO) films and ErBCO films with BaSnO3 (BSO) doping as artificial pinning centers (APCs) by pulse laser deposition on SrTiO3 substrates, and the effects of oxygen pressure on crystallinity, critical temperature (TC) and microstructure of ErBCO films were investigated. In a previous study, we grew ErBCO films with BaNb2O6 (BNO) by controlling the growth temperature under a constant oxygen pressure of 400mTorr and confirmed the effect of BNO as APCs. We observed the tendency which diameter of nanorods became small and pinning force was strong at lower growth temperature. However, crystallinity and TC of ErBCO films degraded at low growth temperature. So, it is very important to improve crystallinity and TC by a novel method. In this study, we focused on oxygen pressure, and aimed at improvement of crystallinity and TC by controlling oxygen pressure.

AB - We grew pure ErBa2Cu3O7-δ (ErBCO) films and ErBCO films with BaSnO3 (BSO) doping as artificial pinning centers (APCs) by pulse laser deposition on SrTiO3 substrates, and the effects of oxygen pressure on crystallinity, critical temperature (TC) and microstructure of ErBCO films were investigated. In a previous study, we grew ErBCO films with BaNb2O6 (BNO) by controlling the growth temperature under a constant oxygen pressure of 400mTorr and confirmed the effect of BNO as APCs. We observed the tendency which diameter of nanorods became small and pinning force was strong at lower growth temperature. However, crystallinity and TC of ErBCO films degraded at low growth temperature. So, it is very important to improve crystallinity and TC by a novel method. In this study, we focused on oxygen pressure, and aimed at improvement of crystallinity and TC by controlling oxygen pressure.

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JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

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ER -

A research for improvement of crystallinity and critical temperature by oxygen pressure in ErBa₂Cu₃O_7-δ films

Abstract

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